I don’t want to run just any old urban marathon: I'm looking for a destination race that will let me combine an incredible trip with my athletic endeavors. Any ideas?

Makes sense to me. If you’re going to be running for hours on end, you might as well enjoy the view, right? We've picked a selection of races that focuses on the earth's wilder side, from coastlines to wildlife-packed tundra. You'll still suffer, though.